Frontline WDJ50 Window/Door Jamb Non-Penetrating Anchor
The fast, reusable anchor that wedges into a window or door opening with no drilling, no bolts, no damage to the frame or finished surfaces. Adjustable arms expand to fit openings from 22″ to 50″ wide, and non-skid protective pads keep finished jambs and sills mar-free. Built for window washers, glaziers, façade and restoration crews, painters, masons, and finish-stage contractors working out of openings on mid-rise and high-rise buildings.
5,000 lb minimum breaking strength · 310 lb user capacity · Fits openings 22″ to 50″ wide · Works on both windows and doors.
Why Crews Choose the WDJ50
Zero Penetration, Zero Damage
No drilling, no bolts, no fasteners into the frame. The WDJ50 braces inside the opening, and non-skid protective pads keep finished door jambs, window frames, and sills free of marks. Ideal for occupied and finish-stage buildings.
Fits Windows and Doors
Adjustable arms expand from 22″ to 50″, so one anchor covers the vast majority of standard window and door openings. Set it on the sill for window work or flat on the floor for door openings, same anchor, two applications.
Tool-Free and Portable
Slide it into the opening, adjust the arms, drop the locking and safety pins, and turn the pressure handle tight. Setup takes seconds with no tools. At 26 lbs, one worker carries it from opening to opening as the job moves.
⚠ Verify Your Opening Before Ordering
The WDJ50 fits structural window and door openings 22″ to 50″ wide. The frame must be a fully installed, secured part of the building structure capable of withstanding a minimum breaking strength of 5,000 lbs, verified by a Qualified Person. The anchor must lie flat in an unobstructed area and fit snugly at 90° against both sides of the frame. If your opening falls outside this range or you're unsure, call us at 863-703-4522 before you buy. Need help planning your project? Use our free Fall Protection Calculator and Safety Plan Generator.
Full Specifications
| Specification | Value |
|---|---|
| Model | WDJ50 |
| Anchor Type | Type A (Temporary) |
| Connector Strength | 5,000 lbs minimum breaking strength |
| User Capacity | 1 worker, 310 lbs combined weight (worker + tools + clothing) |
| Adjustable Opening | 22″ to 50″ wide (window or door frames) |
| Service Temperature | -30°F to +130°F |
| Material | ASTM A500 rated steel · Forged steel D-ring · Electrostatic paint |
| Color / Finish | Safety Green (high-visibility electrostatic powder coat) |
| Surface Protection | Non-skid and protective pads to guard finished frames and sills |
| Anchor Weight | 26 lbs |
| Dimensions | 48″ L × 9″ H × 2½″ depth |
| Direction Loading | 90° vertical, ±15° from the center line — D-ring faces fall hazard. Side loading not permitted. |
| Compliance | OSHA 1926 · OSHA 1910 · ANSI Z359.18-2017 (Type A) |
| Use Class | Personal Fall Arrest System (PFAS) anchorage connector |
Installation — Windows or Doors, One Worker, No Tools
- Verify the window or door opening is a fully installed, structural part of the building, 22″ to 50″ wide, and capable of withstanding a minimum breaking strength of 5,000 lbs (verified by a Qualified Person).
- Position the Horizontal Body behind the structural frame, flat on the floor for a door, or flat on the sill for a window, with the D-Ring Anchor facing the fall hazard.
- Adjust the Adjustable Arm inward so the Anchor Pad and pressure handle fit inside the frame, then push up against the anchor so the Fixed Arm sits snug at 90° against the frame.
- Adjust the Adjustable Arm outward so it fits snugly at 90° against the opposite side of the frame.
- Insert the locking pin through the Adjustable Arm and Horizontal Body into the nearest hole, then secure it with the safety pin.
- Turn the Adjustable Pressure Handle clockwise to tighten against the frame with as much pressure as possible. The anchor must be tight, secure, and flat — never loose or unstable.
- Visually and physically inspect the installation. Connect your compatible PFAS (full body harness + shock-absorbing lanyard or self-retracting lifeline) to the D-ring and begin work.
Direction Loading Limits
The D-ring anchor must face outward toward the fall hazard. Loading must be at 90° to the vertical and within ±15° of the centerline. Side loading is not permitted and will compromise the anchor's rated performance. After any fall arrest event, the WDJ50 must be removed from service immediately.
Code Compliance — United States & Canada
United States
- OSHA 29 CFR 1926 — Construction fall protection
- OSHA 29 CFR 1910 — General industry fall protection
- ANSI/ASSP Z359.18-2017 — Type A anchorage connector for active fall protection systems
- Tested and certified by Intertek (NRTL)
Canada
- Ontario — Reg. 213/91 §26.3 (anchor must meet or exceed CSA component requirements)
- British Columbia — OHSR Part 11.2(2)
- Alberta — OHS Code Part 9 §139
- Quebec — RSST §347
- Note: Pair with CSA Z259-series harness, lanyard, and connecting hardware to maintain a fully CSA-compliant Personal Fall Arrest System.
Independent Lab Certification
Intertek Testing Services NA Inc. — Cortland, NY
The WDJ50 was independently tested and certified by Intertek, a globally accredited Nationally Recognized Testing Laboratory (NRTL), to the full requirements of ANSI/ASSP Z359.18-2017 — the Safety Requirements for Anchorage Connectors for Active Fall Protection Systems.
Tests passed: Design Requirements (§3) · Non-Textile Abrasion Conditioning (§4.2.2.1.2) · Dynamic Strength Test for Type A with 282 lb test weight at 3 ft free fall (§4.2.2.1.4) · Residual Dynamic Strength Test (§4.2.3.1) · Static Strength Test per loading direction at 5,000 lbs (§4.2.1.1) · Marking and Instructions (§5). All six sections across multiple samples returned PASS results, with maximum arrest force values well within ANSI limits across every drop.
Submittal Documents
| Document | Description | Download |
|---|---|---|
| Frontline WDJ50 Window/Door Jamb Spec Sheet | Manufacturer specification sheet covering dimensions, design specifications, features, materials, adjustable opening range, and applicable standards for the Frontline WDJ50 Window/Door Jamb Non-Penetrating Anchor. | Download |
| Frontline WDJ50 Window/Door Jamb Independent Test Report | Intertek third-party test report (105938082CRT-010) certifying the Frontline WDJ50 Window/Door Jamb Non-Penetrating Anchor to ANSI/ASSP Z359.18-2017. Includes design requirements, static strength, dynamic strength, residual dynamic strength, abrasion conditioning, and marking results. | Download |
| Frontline WDJ50 Window/Door Jamb User Instruction Manual | Complete user instruction manual for the Frontline WDJ50 Window/Door Jamb Non-Penetrating Anchor. Includes door and window installation steps, inspection checklist, system requirements, fall clearance calculations, training requirements, and inspection log. | Download |
Frequently Asked Questions
Can the WDJ50 be used on both windows and doors?
Yes. The WDJ50 is designed for both. For a door opening, set the Horizontal Body flat on the floor inside the frame; for a window opening, set it flat on the window sill. In both cases, the adjustable arms expand to fit the opening, and the D-ring faces the fall hazard. The user manual includes separate step-by-step procedures for door and window installation.
What size opening does the WDJ50 fit?
The WDJ50 fits structural window and door openings from 22 inches to 50 inches wide. The frame must be fully installed, secured, and part of the building structure, and the anchor must lie flat in an unobstructed area. If your opening is narrower than 22 inches or wider than 50 inches, the WDJ50 will not fit — call us at 863-703-4522, and we'll help you find the right anchor.
Will the WDJ50 damage the window or door frame?
No. The WDJ50 is a non-penetrating anchor — it braces inside the opening without drilling, bolting, or fastening into the frame. It also features non-skid and protective pads that guard finished jambs, frames, and sills against marks, making it well-suited to occupied buildings and finish-stage work.
Is the WDJ50 OSHA- and ANSI-compliant?
Yes. The WDJ50 meets the requirements of OSHA 29 CFR 1926 (construction), OSHA 29 CFR 1910 (general industry), and ANSI/ASSP Z359.18-2017 (Type A anchorage connector). It has been independently tested and certified by Intertek, a Nationally Recognized Testing Laboratory, under report number 105938082CRT-010 dated September 26, 2024.
Can I reuse the WDJ50 after a fall has been arrested?
No. ANSI Z359.18 and the Frontline user manual both require that any anchor subjected to a fall arrest event be removed from service immediately. The WDJ50 is a Type A (temporary) anchor designed for repeated installation and removal, but if it ever arrests an actual fall, take it out of service and replace it.
What direction can I work in once the anchor is installed?
The D-ring anchor must face outward toward the fall hazard. Loading must be at 90 degrees vertical and within 15 degrees of the center line in either direction. Side loading is not permitted and will compromise the anchor's rated performance. Always work directly below or in line with the anchor; do not work at angles that would create a swing fall hazard.
What other equipment do I need to use the WDJ50?
The WDJ50 is one component of a complete Personal Fall Arrest System. To use it safely, you also need a Frontline 100RCTB Combat Harness, a connecting subsystem — either a shock-absorbing lanyard or a self-retracting lifeline (SRL) — and a documented rescue plan. The connecting hardware must be a locking snap hook or carabiner compatible with the WDJ50's forged D-ring. Call 863-703-4522 if you'd like a complete system recommendation built around your specific job.
How often does the WDJ50 need to be inspected?
The user must inspect the WDJ50 before every use, looking for damage, corrosion, missing parts, deformation, loose bolts or nuts, legible labels, intact wearing pads, and proper function of the adjustable handle, locking pin, and safety pin. A Competent Person other than the user must conduct a documented, thorough inspection at least every 6 months, or sooner if conditions warrant. The user manual includes a full inspection checklist and a log for record-keeping.
Need Help Sizing or Specifying?
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